Light rays enter the human eye through the cornea, which bends the light through the pupil. The light passes through the lens and focuses on the retina, where millions of cones and rods convert the light into impulses and send them to the brain. Sudden loss of vision occurs when something interrupts this process.

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<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="87abn-0-0"><span data-offset-key="87abn-0-0"><span data-text="true">Eyes are complex globe-shaped organs about the size of ping-pong balls. Basically, the human eye works much like a digital camera. This is because of how it focuses incoming light to make a clear picture. Although the eye is </span></span><span class="qualifier"><span data-offset-key="87abn-1-0"><span data-text="true">just</span></span></span><span data-offset-key="87abn-2-0"><span data-text="true"> one part of the larger visual system.</span></span></div>
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<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="2m41j-0-0"><span data-offset-key="2m41j-0-0"><span data-text="true">The eyelid protects the eye and blinks often to keep the eyeball moist and clean. The cornea, a clear dome-like structure, covers the iris and the pupil. The cornea directs and focuses light rays which provides us with sharp vision.</span></span></div>
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<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="60uod-0-0"><span data-offset-key="60uod-0-0"><span data-text="true">The iris is the colorful part of the eye. More than giving us a distinct appearance, it performs a critical task. It consists of muscles that change shape and controls how much light goes through the pupil. The pupil is the black circle in the middle of the iris.</span></span></div>
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<div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr" data-offset-key="60uod-0-0">Eye health is an important and often overlooked part of a check-up. For those who do not require glasses, an optometrist is not part of their regular health visits. However, an optometrist does more than just test for eyesight. They perform a battery of tests for your eyeball's internal health and natural reflexes. If it has been a few years since your last optometrist visit, consider making an appointment soon. Many of us rely on our eyes for just about everything.</div>

Ailments

An "ailment" is a general term for minor to moderate physical illnesses, diseases, and disorders. In Facty Health, many different diagnoses fall under the ailment category. For example, acid reflux, eye disorders, skin problems, and GI problems, are considered an ailment.

In this category, you can discover natural home remedies for common symptoms. You will find that there is probably a miracle ingredient hiding in your pantry right now. Learn what foods to stay away from and which foods can help ease certain conditions. You can even learn to spot the early warning signs of some of the more severe diseases. Expect to find detailed and interesting information about the types of ailments, their symptoms, causes, and treatments.

If you have questions about a specific ailment or you just have a general curiosity for medicine, this would be a good place to start.

Eyes

10 Frequently Asked Questions About Sudden Loss of Vision

6. What is transient visual obscuration?

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